<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport"
    content="width=device-width, initial-scale=1.0,minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
  <link rel="icon" href="<%= BASE_URL %>favicon.ico">
  <title>五常街道</title>
  <script src="./f2.min.js"></script>
</head>

<body>
  <noscript>
    <strong>We're sorry but <%= htmlWebpackPlugin.options.title %> doesn't work properly without JavaScript enabled.
      Please enable it to continue.</strong>
  </noscript>
  <div id="app"></div>
  <!-- built files will be auto injected -->
</body>
<script>
  function isPromise(obj) {
  return !!obj  //有实际含义的变量才执行方法，变量null，undefined和''空串都为false
  	&& (typeof obj === 'object' || typeof obj === 'function') // 初始promise 或 promise.then返回的
  	&& typeof obj.then === 'function';
}

  //设定苹果手机input框不自动放大监听
  document.addEventListener('touchstart', function (event) {
    if (event.touches.length > 1) {
      event.preventDefault();
    }
  });
  var lastTouchEnd = 0;
  document.addEventListener('touchend', function (event) {
    var now = (new Date()).getTime();
    if (now - lastTouchEnd <= 300) {
      event.preventDefault();
    }
    lastTouchEnd = now;
  }, false);
</script>

</html>